What plant in the original Plants vs. Zombies is used to destroy graves in graveyard levels? Grave Buster is the plant.
Grave Buster is a single-use plant designed specifically to remove graves and zombie gravestones. The player plants it directly on a grave, where it consumes the obstacle and clears the tile for another plant. Removing graves also prevents them from producing additional zombies during the final wave of a level.
The plant is introduced during the Night levels and is unlocked after completing level 2-3. It costs 75 sun and cannot be planted on an ordinary lawn square; its valid targets are graves and, in relevant modes, zombie gravestones. That specialized placement requirement makes it different from offensive plants such as Pumpkin or Plantern.
A frequent mix-up is assuming that Pumpkin destroys graves because it protects plants, or that Plantern removes obstacles because it improves visibility. Neither does. Pumpkin acts as armor around another plant, while Plantern illuminates fog and reveals hidden areas. Grave Buster’s job is environmental cleanup, not direct zombie damage.